RF Interface Signal Transmission Using TDMA and FDMA
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Solution Overview
Problem
The complexity and design challenges of signal transmission and reception in mmWave communication systems increase exponentially with the number of signals, particularly due to inter-signal interference, and the bulkier design required for clock signals leads to jitter issues and electromagnetic interference.
Innovation Solution
Implementing a method that transmits control signals and clock signals based on Time Division Multiple Access (TDMA) and DC power and RF/IF signals based on Frequency Division Multiple Access (FDMA), using pulse signals to reduce interference and optimize signal transmission and reception between wireless communication units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple signals are transmitted through cables using frequency division scheme, then signal transmission capability is improved, but frequency selector design complexity increases exponentially
Solution Approach 1:
The patent combines multiple signal transmission functions (DC power, clock, control, and RF/IF signals) into a single cable interface. Instead of using separate cables or complex frequency selectors for each signal type, the invention merges all these functions into one unified transmission medium, thereby reducing design complexity while maintaining full signal transmission capability.
Solution Approach 2:
The single cable interface is designed to handle multiple signal types simultaneously through time-division multiplexing. The interface becomes universal, capable of transmitting DC power, clock signals, control signals, and RF/IF signals through the same physical medium at different time intervals, eliminating the need for specialized frequency selectors for each signal type.
2Reliability
If clock signals are transmitted through frequency selector, then synchronization is achieved, but device size increases and jitter occurs
Solution Approach 1:
The patent extracts the clock signal transmission from the complex frequency selector system and assigns it a dedicated time slot in the time-division multiplexing scheme. By separating clock signal handling from the frequency selection process and transmitting it directly through the unified interface at specific intervals, the invention eliminates the need for bulky frequency selector components while maintaining synchronization reliability.
3Productivity
If more signals are differentiated in frequency selector, then signal separation is achieved, but inter-signal interference increases
Solution Approach 1:
The patent implements periodic action by transmitting different signal types in alternating time intervals through the unified cable interface. DC power, clock signals, control signals, and RF/IF signals are transmitted in sequential time slots rather than simultaneously, which eliminates inter-signal interference while maintaining the ability to separate and process each signal type at the receiving end.
Data Source
AI summary
The present invention relates to a 5th-generation (5G) or pre-5G communication system to be provided in order to support a higher data transmission rate than a beyond 4th-generation (4G) communication system such as long term evolution (LTE). The present invention relates to a signal transmission method of a radio frequency (RF) processing device, the method comprising the steps of: generating a pulse signal including a control signal and a clock signal for obtaining synchronization with another RF processing device, which is connected through an interface; and transmitting, to the another RF processing device, at least one from among the pulse signal, a RF signal for communication with a base station, and a power signal for supplying power to the another RF processing device, wherein the clock signal and the control signal are assigned to different time units, and the pulse signal, the RF signal and the power signal are signals of different frequency bands.